<!DOCTYPE html>
<html lang="zh-CN">

<head>
    <meta charset="UTF-8" />
    <meta http-equiv="X-UA-Compatible" content="IE=edge" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
        .box {
            width: 200px;
            height: 200px;
            background-color: pink;
            margin: 20px;
            padding: 30px;
        }
    </style>
</head>

<body>
    <div class="box" id="box01">
        <h2>mouseout</h2>
        <button>子元素1</button>
        <button>子元素2</button>
    </div>
    <div class="box" id="box02">
        <h2>mouseleave</h2>
        <button>子元素1</button>
        <button>子元素2</button>
    </div>
    <script>
        const box01 = document.querySelector('#box01')
        const box02 = document.querySelector('#box02')

        // mouseout/mouseover      鼠标移出/移入
        // box01.addEventListener('mouseout',() => {
        //   console.log('💥mouseout 鼠标移出盒子了');
        // })
        box01.addEventListener('mouseover', () => {
            console.log('💥mouseover 鼠标移入盒子了');
        })

        // mouseleave/mouseenter  👍更好用的鼠标移出/移入
        box02.addEventListener('mouseleave', () => {
            console.log('👍mouseleave 鼠标移出盒子了');
        })
      // box02.addEventListener('mouseenter',() => {
      //   console.log('👍mouseenter 鼠标移出盒子了');
      // })
    </script>
</body>

</html>
